Switch off EGR for $1

[old Jack]

There is no way that any engineer in their right mind would introduce dirty exhaust into the clean side of the intake on an engine if there wasn't the need to meet some arbitrary test. It's sheer madness when we filter our intake air and fuel to almost ridiculous levels.

But I do understand that planet-wide we need to change our ways and EGR is a step along the way. I have, more than once, been accused of being out of step with the majority and EGR is a step that I am willing to not take because of the long term damage potential to the engine, the cost of having to clean the intake and the cost of having to replace/repair the EGR system itself.

No further analysis necessary.

Agree. I know when my EGR was operating as per the factory program, the results were an increase in both fuel consumption and visible emission.
I suspect my engine with 200,000+km would most likely produce less emission than a similar engine of the same age and kms that had used the factory EGR program.
Rightly or wrongly I view my resistor mod not as a EGR delete, because the EGR valve still operates but it operates as per the factory program but with a modified input signal..

OJ.

[hanker]

Folks, I have been through reading all posts i can find regarding the EGR delete for my stock 2011 Pajero 3.2 147kw(200hp) vehicle and as a result i am pretty confused on selecting which method to pick for doing the job. In summary:
-Somes have used the resistor mod.
-somes have installed blanking plates.
-Some do both while some also drilling holes into blanking plates.
-Some preferred ECU remapping to keep EGR valve closed and still adding a plate to guarantee the valve malfunction.

In all routes there are many happy with their setup while there are lots of posts about downsides. For instance;
-resistor mod may cause run-ons and shaking at shut-down.
-Some claim blanking plates standalone may bring pressure loss and throw error codes and therefor drill holes to manipulate.

I spoke to Arnold from Mitsi Tech since his expertise is mentioned in many posts and he suggested me that there is no need to play with ECU and leave factory mapping as it is and it is only enough installing blanking plates to intake and exhaust sides ot the EGR valve without drilling any holes. He said this is just enough to bypass the negative effect of EGR system and still keeping it operational without throwing error codes.

I will b every pleased if there is any of you that can help me to clear my mind on this subject.
Supports pretty much appreciated.

Thanks,
Han

[Dicko1]

Folks, I have been through reading all posts i can find regarding the EGR delete for my stock 2011 Pajero 3.2 147kw(200hp) vehicle and as a result i am pretty confused on selecting which method to pick for doing the job. In summary:
-Somes have used the resistor mod.
-somes have installed blanking plates.
-Some do both while some also drilling holes into blanking plates.
-Some preferred ECU remapping to keep EGR valve closed and still adding a plate to guarantee the valve malfunction.

In all routes there are many happy with their setup while there are lots of posts about downsides. For instance;
-resistor mod may cause run-ons and shaking at shut-down.
-Some claim blanking plates standalone may bring pressure loss and throw error codes and therefor drill holes to manipulate.

I spoke to Arnold from Mitsi Tech since his expertise is mentioned in many posts and he suggested me that there is no need to play with ECU and leave factory mapping as it is and it is only enough installing blanking plates to intake and exhaust sides ot the EGR valve without drilling any holes. He said this is just enough to bypass the negative effect of EGR system and still keeping it operational without throwing error codes.

I will b every pleased if there is any of you that can help me to clear my mind on this subject.
Supports pretty much appreciated.

Thanks,
Han

I had a plug in EGR delete on my NW for around 6 years (I think). Worked no worries. 3 years ago I had the ecu remapped and they did the EGR delete as part of the tune. I sold the plug in EGR cheap to a fellow forum member. Combined with a Provent 200 catch can and some form of EGR delete virtually from brand new , I have never had a negative experience with the engine at all. I know my manifold is very clean and my oil lasts several thousand kilometers before starting to turn dark. Never had a code thrown.

[BruceandBobbi]

Had an EGR delete cable in for 340,000kl with no drama.

[redbruce]

The delete cable works and is easily reversible if required (law, diagnostics, etc).

The blank plate works but on some cars needs a 6mm hole drilled in it to prevent an engine EGR code. Still lets exhaust in so seems pointless to me.

Blank plates on both sides of EGR is a lot more work than the resistor mod or delete cable and the latter work fine.

[hanker]

Thanks for the replies mates.

I understand the procedure with resistor mod and seems logical. Although just in case i want to mention a post from superchips which somehow didn't take to many attention in it's posted thread.

https://www.pajeroforum.com.au/forum/vehicles/generation-4-3-pajero/22974-egr-blanking-plate-nw?q=shut

You might already seen it but Superchips and Cate03 is suggesting that when EGR is blanked, it causes the map sensor to fail by detecting a positive pressure from the egr but not from the turbo which in the end causes poor air flow bringing surge and loss of power. Therefor he suggests to port some air from the turbo by drilling a big hole in the throttle plate etc.

I don't know if this is something to be credited but if i am not mistaking when you keep the egr valve in off position by the resistor mod, doesn't this also mean that the valve will also act as a permenant blanking plate and in the end should also bring the the same pressure diff effect which is failing the MAP sensor ?

Do you think that this is a concern?

Best Regards,

[BruceandBobbi]

Thanks for the replies mates.

I understand the procedure with resistor mod and seems logical. Although just in case i want to mention a post from superchips which somehow didn't take to many attention in it's posted thread.

https://www.pajeroforum.com.au/forum/vehicles/generation-4-3-pajero/22974-egr-blanking-plate-nw?q=shut

You might already seen it but Superchips and Cate03 is suggesting that when EGR is blanked, it causes the map sensor to fail by detecting a positive pressure from the egr but not from the turbo which in the end causes poor air flow bringing surge and loss of power. Therefor he suggests to port some air from the turbo by drilling a big hole in the throttle plate etc.

I don't know if this is something to be credited but if i am not mistaking when you keep the egr valve in off position by the resistor mod, doesn't this also mean that the valve will also act as a permenant blanking plate and in the end should also bring the the same pressure diff effect which is failing the MAP sensor ?

Do you think that this is a concern?

Best Regards,

ALL OF THE ABOVE IS A LOAD OF BOLLOCKS.

As I've said twice in this thread, 340,000kl with a EGR delete cable and no problems.

Others here have had the the cable with no problems.

Thought you should also know, that Superchips also known as Chip Tuning sell EGR delete cables.

[pharb]

Thanks for the replies mates.

I understand the procedure with resistor mod and seems logical. Although just in case i want to mention a post from superchips which somehow didn't take to many attention in it's posted thread.

https://www.pajeroforum.com.au/forum/vehicles/generation-4-3-pajero/22974-egr-blanking-plate-nw?q=shut

You might already seen it but Superchips and Cate03 is suggesting that when EGR is blanked, it causes the map sensor to fail by detecting a positive pressure from the egr but not from the turbo which in the end causes poor air flow bringing surge and loss of power. Therefor he suggests to port some air from the turbo by drilling a big hole in the throttle plate etc.

I don't know if this is something to be credited but if i am not mistaking when you keep the egr valve in off position by the resistor mod, doesn't this also mean that the valve will also act as a permenant blanking plate and in the end should also bring the the same pressure diff effect which is failing the MAP sensor ?

Do you think that this is a concern?

Best Regards,

When EGR opens the ECU expects specific pressure range at various points. With blanking plate when the EGR opens the ECU is expecting specific pressures, but not seeing them because blanking plate is blocking air flow, hence the small hole in blanking plate to allow somewhat correct pressures, but minimal exhaust flow.

Cable or resistor mod keeps the ECU from opening the EGR, so ECU is not looking for pressure change that occurrs when EGR is open.

[Scooby]

When EGR opens the ECU expects specific pressure range at various points. With blanking plate when the EGR opens the ECU is expecting specific pressures, but not seeing them because blanking plate is blocking air flow, hence the small hole in blanking plate to allow somewhat correct pressures, but minimal exhaust flow.

Cable or resistor mod keeps the ECU from opening the EGR, so ECU is not looking for pressure change that occurrs when EGR is open.

This x 2

The part about run-ons and shaking on shut down.
Standard engine on shut down the ECU closes the intake butterfly and opens the EGR so it isn’t an instant shut down so a bit smoother.
Permanently closing the the EGR by what ever method, chip, resistor, ECU delete OR blanking plate will all give the same effect of an instant shutdown. Only a drilled plate might let it shut down a bit smoother.
Do you really need the intake butterfly if you have the EGR blocked.
Turn key off, injection stops, engine stops, no need to have a intake butterfly valve.
Most other diesel engines without EGR’s do not have them.

[BruceandBobbi]

This x 2

The part about run-ons and shaking on shut down.
Standard engine on shut down the ECU closes the intake butterfly and opens the EGR so it isn’t an instant shut down so a bit smoother.
Permanently closing the the EGR by what ever method, chip, resistor, ECU delete OR blanking plate will all give the same effect of an instant shutdown. .

Yep. Never had 'run on' with the cable.